Using world position pass to obscure other footage.

Hello

I just created a world position pass and imported my camera data from Blender.
I was was able to successfully add volume fog to my test render pass. I want too now add footage and have it appear to intersect with the test pass. An example of what im trying to describe can be seen here.

http://www.videocopilot.net/docs/elemen ... ion_matte/

Any help or a link to point me in the right direction would be great!

use the volume mask (2d node)
you have to feed in the camera scene, and then you can create your volume mask from that.

The tool is in the position category of the tools.

Got it working now, thank you !